Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Catalysis02:50

Catalysis

26.9K
The presence of a catalyst affects the rate of a chemical reaction. A catalyst is a substance that can increase the reaction rate without being consumed during the process. A basic comprehension of a catalysts’ role during chemical reactions can be understood from the concept of reaction mechanisms and energy diagrams.
26.9K
Reduction of Alkenes: Asymmetric Catalytic Hydrogenation02:17

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation

3.3K
Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
3.3K
Preparation of Amines: Reduction of Amides and Nitriles01:13

Preparation of Amines: Reduction of Amides and Nitriles

2.4K
Nitriles can be reduced to primary amines using reducing agents like lithium aluminum hydride or catalytic hydrogenation. The reduction introduces an amino group with an extra carbon in the skeleton. Nitriles are formed from the reaction between alkyl halides and sodium cyanide through the SN2 mechanism. Primary alkyl halides are the preferred substrates to prepare nitriles.
Amides can be reduced to primary, secondary, and tertiary amines using catalytic hydrogenation, active metals like Fe,...
2.4K
Preparation of Amines: Reduction of Oximes and Nitro Compounds01:29

Preparation of Amines: Reduction of Oximes and Nitro Compounds

3.6K
Oximes can be reduced to primary amines using catalytic hydrogenation, hydride reduction, or sodium metal reduction. The reduction of aliphatic and aromatic nitro compounds to primary amines takes place by either catalytic hydrogenation or by using active metals like Fe, Zn, and Sn in the presence of an acid.
Though catalytic hydrogenation can reduce nitrobenzenes, the reduction is nonselective in the presence of other functional groups. For instance, if nitrobenzene contains an aldehyde group,...
3.6K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Preoperative regional homogeneity predicts postoperative delirium susceptibility after cardiac surgery.

Brain research bulletin·2026
Same author

Liver fibrosis in metabolic dysfunction-associated steatotic liver disease: epidemiology, risk stratification and therapeutics.

BMJ open gastroenterology·2026
Same author

Engineering the flexibility of the β-sheet containing Y58 in L-aspartate-α-decarboxylase to relieve mechanism-based inactivation.

3 Biotech·2026
Same author

Discovery and optimization of a pH-responsive ultra-long-acting VHH-based growth hormone mimetic.

mAbs·2026
Same author

Decreased CD8+ T Lymphocytes is an Independent Influencing Factor for Persistent HR-HPV Infection.

International journal of women's health·2026
Same author

Origin of Reversible Interlayer-Disorder-Induced Phase Transitions in Layered Sodium Manganese Oxide Cathodes.

Journal of the American Chemical Society·2026

相关实验视频

Updated: Jul 5, 2025

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
10:57

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Published on: April 10, 2018

18.2K

在电催化降低的定制单原子催化剂的自我一致的框架.

Mingxin Qin1, Lanlan Chen2, Wenhua Zhang2,3

  • 1Key Laboratory of Precision and Intelligent Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China.

The journal of physical chemistry letters
|January 23, 2024
PubMed
概括

设计有效的单原子催化剂 (SAC) 需要考虑反应条件. 一个新的选框架预测了特定的g-C3N4支持的金属催化剂的优质降解反应 (NRR) 活性.

更多相关视频

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
08:40

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Published on: December 6, 2021

3.6K
Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance
09:02

Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance

Published on: April 27, 2018

7.8K

相关实验视频

Last Updated: Jul 5, 2025

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
10:57

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Published on: April 10, 2018

18.2K
Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
08:40

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Published on: December 6, 2021

3.6K
Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance
09:02

Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance

Published on: April 27, 2018

7.8K

科学领域:

  • 材料科学 材料科学 材料科学
  • 催化剂是一种催化剂.
  • 计算化学的计算化学

背景情况:

  • 单原子催化剂 (SAC) 对各种化学反应具有很大的前景.
  • SACs的性能高度依赖于它们的局部原子和电子结构,受反应条件的影响.
  • 设计高效的SAC需要一种理论方法,以考虑这些动态的环境因素.

研究的目的:

  • 为设计单原子催化剂 (SAC) 开发一个自相一致的理论选框架.
  • 通过使用拟议的框架,识别降解反应 (NRR) 具有高活性的SAC.
  • 为了研究连接体配置和反应条件对SAC性能的影响.

主要方法:

  • 使用密度函数理论 (DFT) 计算来建模SACs.
  • 构建Pourbaix图表以确定在各种条件下稳定的配置.
  • 通过计算不同SAC配置的限制潜力 (U_L) 来评估NRR活动.
  • 在计算的U_L时重新检查了有希望的配置的稳定性.

主要成果:

  • 为理论SAC设计建立了一个新的选框架.
  • 确定了g-C3N4支持的Nb和W的特定配置,它们对NRR具有高度活性.
  • 预计对双层g-C3N4支持的Nb (U_L = -0.36 V) 的交流堆叠的优越NRR活性.
  • 预计AA和AB叠加双层g-C3N4支持的W的优越NRR活性 (U_L = -0.45V和 -0.52V,分别).

结论:

  • 开发的查框架通过考虑反应条件,准确地预测SAC性能.
  • 该研究强调了特定的g-C3N4支持金属SACs对高效NRR的潜力.
  • 拟议的方法广泛适用于各种电催化反应中的SAC选.